Franz Unterlechner (born 4 October 1891; date of death unknown) was an Austrian skeleton racer who competed in the late 1920s. He finished sixth in the men's skeleton event at the 1928 Winter Olympics in St. Moritz.

References 1928 men's skeleton results Skeletonsport.com profile Wallechinsky, David (1984). "Skeleton (Cresta Run)". The Complete Book of the Olympics: 1896-1980. New York: Penguin Books. p. 576.